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All results from a given calculation for SiH2D2 (silane-d2)

using model chemistry: PBEPBEultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBEultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-291.723363
Energy at 298.15K-291.723449
HF Energy-291.723363
Nuclear repulsion energy21.111597
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBEPBEultrafine/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2174 2150 49.97      
2 A1 1554 1537 26.20      
3 A1 904 894 44.82      
4 A1 648 641 35.40      
5 A2 813 804 0.00      
6 B1 1577 1559 55.67      
7 B1 813 804 91.30      
8 B2 2182 2158 96.77      
9 B2 701 693 68.88      

Unscaled Zero Point Vibrational Energy (zpe) 5683.6 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 5620.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBEPBEultrafine/aug-cc-pVTZ
ABC
2.27036 1.86999 1.61674

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Si1 0.000 0.000 0.000
H2 0.000 1.221 0.864
H3 0.000 -1.221 0.864
H4 -1.221 0.000 -0.864
H5 1.221 0.000 -0.864

Atom - Atom Distances (Å)
  Si1 H2 H3 H4 H5
Si11.49581.49581.49581.4958
H21.49582.44262.44262.4426
H31.49582.44262.44262.4426
H41.49582.44262.44262.4426
H51.49582.44262.44262.4426

picture of silane-d2 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 Si1 H3 109.471 H2 Si1 D4 109.471
H2 Si1 D5 109.471 H3 Si1 D4 109.471
H3 Si1 D5 109.471 D4 Si1 D5 109.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Si 0.790      
2 H -0.198      
3 H -0.198      
4 H -0.198      
5 H -0.198      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.661 0.000 0.000
y 0.000 -16.661 0.000
z 0.000 0.000 -16.661
Traceless
 xyz
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.008 0.000 0.000
y 0.000 5.008 0.000
z 0.000 0.000 5.008


<r2> (average value of r2) Å2
<r2> 19.356
(<r2>)1/2 4.400